The return of the runny nose

The runny nose has returned today, after one whole week off (two weeks on before that.. been on and off since she turned a year old, and I suppose it turned into winter..).

So the question of the day (in my house at least) is:

Is the new snot caused by:

a) a reaction to her immunisations (not mentioned as a symptom on NHS sheet)
b) teething (also has one bright pink cheek)
c) a new cold (that is what it was a week ago)

Answers on a postcard to: The Snot Fairy, 8 Tissue Lane, Bogeyton, AT2 Sh00
It makes me glad that she is such a little mimic, as she does blow through her nose when I hold a tissue to her face and blow through my nose. Although I do have to catch her first, as if she sees a tissue she runs away..

We did manage a nice long dog walk at Wimbledon Common today, which looked very pretty in the snow.

The Windmill on Wimbledon Common